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Old 07-11-2004, 01:55 AM   #1
2.5rsDOHC
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Default options for ecu management?

I have a 98 2.5rs dohc and its geting headgaskets replaced so I figured id turbocharge it while its in the shop, but my concern is what do I do about my stock ecu? Can it be reflashed by anyone who watches tech tv or this something that takes lots of hardware to adjust, does anyone know of cheap ecus or piggybacks for my car that are programable what are my options...

BTW: what damage could be caused from turbochargeing my rs without runing a programed ecu?
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Old 07-11-2004, 02:05 AM   #2
NeaD
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Default

Hydra EMS or Link plus
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Old 07-11-2004, 02:34 AM   #3
subiekid
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Default Re: options for ecu management?

Quote:
Originally posted by 2.5rsDOHC
Can it be reflashed by anyone who watches tech tv
Best line evAr.
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Old 07-11-2004, 12:18 PM   #4
munkis
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On a 98 you can run up to 6-8 psi and use an SAFC, with good results.

I run 11 psi of the stock ecu with an safc and j&s knockguard. EGTs get a little to high when im really on it so I have to keep the right foot in check. I also have a 2.2t shortblock.

I wouldnt run much more than 8 on a stock 2.5 bottom end.

HTH

jay
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Old 07-11-2004, 02:03 PM   #5
NeaD
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I'm running 8 psi in my 98.
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Old 07-11-2004, 03:49 PM   #6
2.5rsDOHC
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I appreciate everyones input I belive I can make my mind up now but what does SAFC stand for
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Old 07-11-2004, 06:31 PM   #7
munkis
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Super Air Flow Converter.

made by APEXi

Next step up from that would be a Greddy Emanage, just a bit more money but has alot more features, but requires a lap top and real tuning.. as in dyno, or wideband tuning..

Jay
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Old 07-11-2004, 06:33 PM   #8
munkis
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http://www.apexi-usa.com/electronics_safc.asp

looks like the havent updated their site, but thats the orig SAFC, they now have the SAFCII it has more functions and more precise tuning.

Jay
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Old 07-12-2004, 03:57 PM   #9
2.5rsDOHC
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Default

This helps me out alot in my future plans to go forced induction thanks alot for the assistance and if I havent been too much trouble I have one more qustion, is there any other modifications that I should make before I run about 6-8lbs boost?
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Old 07-12-2004, 05:34 PM   #10
Andursun0013
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Should definately be thinking about a stronger clutch...maybe a promotion at work also cause trust me, it can get expensive unless your a very self controlling person unlike myself

Kyle

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Old 07-12-2004, 05:56 PM   #11
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i have a safc too, and i'm turboing my rs and really the afc helps w/ an ej25 t? if it matters i have a MY00 2.5rs.
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Old 07-12-2004, 06:45 PM   #12
munkis
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billy

a 2000 ecu will learn around the SAFC.

You might want to look into a gready emanage, and j&s knockguard, if you dont want to go full standalone.

Jay
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Old 07-21-2004, 02:03 AM   #13
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jay

is there any way to stop the ecu from learning around it?

billy
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Old 07-21-2004, 04:54 PM   #14
ilmaestro
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Quote:
Originally Posted by billyr2.5
jay

is there any way to stop the ecu from learning around it?

billy
No, there isn't, but iI believe it's only an issue with newer RSs. The 98 should be fine and is probably the best car to use an AFC with.

BUT, a better alternative is to use a Greddy E-manage, which for slightly more than an AFC, you can control timing and fuel (what the AFC does). Also, the E-manage has an advantage over the AFC since it adds fuel by directly modifying the injector duty cycle as oppose to modifying the MAF signal, which can have some slight negative side effects.

Search around for info on the E-manage.

good luck.
jonathan
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Old 07-21-2004, 07:19 PM   #15
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Also know that it depends on your plans for the build. I was going to do a Greddy E but then was told it wouldn't pull enough fuel past 10 psi-ish. and i'm looking for 15-20's once turbo, and STi block is on. WHEN, yes i know, it sucks. But cheep. this game really isn't cheep. but look on the used private for sale classifieds.

Also, where can i get a J&S? everyone seems to have them, but no one knows where one can buy one. W T F Batman? Thanks for any help.
-Eli
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Old 07-21-2004, 08:45 PM   #16
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Yeah... Eli's got it right. Once you start getting into the 10+psi range you're looking at needing a standalone ECU such as the Haltech, LINK, Tec units, etc.

Eli: J&S's can be purchased directly from J&S. They also pop up on ebay pretty often. Check their website and send them an e-mail. John from J&S posts here every now and then. You could try finding him and sending him a PM.

j
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Old 07-24-2004, 01:51 AM   #17
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sweet thanks so do u guys think i should just sell my safc and by the e mang. or try to find a 98 ecu?
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Old 07-25-2004, 01:22 AM   #18
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I would spend my money on a stand alone. I have a 1998 that has been turbo for two years. I have used the SAFC and a ITC. They will work alright but the stock computer doesn't have a fuel or ignition map past 0psi. So don't plan on running more than 8psi without any problems.

http://www.microtechefi.com/

You will need the LT-8
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Old 07-25-2004, 10:12 AM   #19
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Quote:
Originally Posted by McDade

I wouldnt run much more than 8 on a stock 2.5 bottom end.

HTH

jay

HA!!!

10-12 psi, stock bottom end and over 40k on the boost!

Still going strong! (not with me anymore, but she's still good!)
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Old 07-25-2004, 10:17 PM   #20
billyr2.5
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do you guys think with only 6psi a 98 ecu swap would be all right?
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Old 07-26-2004, 01:21 AM   #21
Derk1127
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if you have a 2000 then i dont think you can swap to a 98 ecu because the 98s are MAF and DOHC, the only interchangable years i can imagine are the 00 and the 01 since the cars are the same.
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Old 07-27-2004, 04:41 AM   #22
billyr2.5
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and the 01 ecu would learn around the safc too tho right?, i'm about to just save up and do a link or some kind of standalone
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Old 07-27-2004, 11:57 AM   #23
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You can get a J&S safeguard at http://www.jandssafeguard.com/

John's a good guy - real knowledgeful. Call them up and order it right over the phone.
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Old 07-27-2004, 07:37 PM   #24
munkis
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Quote:
Originally Posted by hondaslayer
HA!!!

10-12 psi, stock bottom end and over 40k on the boost!

Still going strong! (not with me anymore, but she's still good!)
shut up n00b!

My car has been turbo for almost 30k. on 11psi, stock 98 ECU, SAFC and J&S

Jay
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